His 14 x 14in (35.5 x 35.5cm) sculpture Relief Dinamic had an estimate of $1000-1500 but hammered for $18,000 (£14,250).
Key to its appeal was the date – it was signed and dated 1962/65 – shortly after Demarco had left his native Buenos Aires to join the French art scene. Arriving in Paris in 1960, he had become a founding member of the Groupe de Recherche d’Art Visuel (GRAV), the collaborative artists group in Paris that consisted of 11 opto-kinetic artists.
Relief Dinamic also carried labels for Galerie Denise Rene, the Parisian gallery that is considered the ‘home’ of constructive and kinetic art. It held the first exhibition Tendencies of Abstract Art in 1948.
The mixed-media work, which would originally have been illuminated and set in motion by electricity, came for sale from a Chicago estate.